1925 with Chevrolet overhead conversion

[redmodelt]

End of May red eye candy. Poured machined my own mains. Will be using timer and coils. Not a high compression setup, just a bit more over stock. The coil box will/is mounted on the bracket in the last photo like the 1926/27 did.

 

[J Franklin]

What HP will you expect? It does look real nice.

 

[gz]

Great engine. Zoom zoom!!

 

[rotorwrench]

Mods like this make me wonder how a person deals with piston clearance and clearance volume. The adapter plate has to be pretty thick to get a good bolt up. Are pop up pistons used?

 

[redmodelt]

HP no clue. How thick would depend on material used to make the plate. I used aluminum at about 1" thick. This one is what amounts to two offset holes made with only using a drill press and burr. Others used a more wedged shape. As long as there is clearance for the valves to come down and popup for top of pistons you can get a lot of squish out of the adapter. I got the water outlet from Gene French years ago.

Just standard pistons. The 1928 head does have larger valves.

 

[A bones]

Super soup job.
You really did good there.
Any extra power is always welcome
Thanks

 

[mercman from oz]

Very impressive

 

[redmodelt]

Thank you!
You may not be able to view this until May 4th but here is a link to it running.

https://www.youtube.com/watch?v=udkEFezOZ2s

 

[Dads37PU]

That's awesome, sounds good too!
Good job Mark!